Merrimac, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merrimac, a community in Montgomery County, Virginia.
Overnight
66°F
Slight Chance Rain Showers
A slight chance of rain showers. Mostly cloudy, with a low around 66. Northeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Merrimac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Slight Chance Rain Showers | 5 mph NE | 19% |
| Tuesday | 79°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 7 mph E | 42% |
| Tuesday Night | 66°F | Chance Showers And Thunderstorms | 1 to 6 mph NE | 54% |
| Wednesday | 81°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph SE | 61% |
| Wednesday Night | 67°F | Showers And Thunderstorms Likely then Mostly Cloudy | 1 to 5 mph S | 57% |
| Thursday | 84°F | Partly Sunny then Showers And Thunderstorms | 1 to 6 mph SW | 81% |
| Thursday Night | 66°F | Showers And Thunderstorms then Mostly Cloudy | 5 mph SW | 81% |
| Friday | 84°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 65% |
| Friday Night | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 3 mph SW | 65% |
| Saturday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph W | 52% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 3 mph SW | 52% |
| Sunday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 3 mph W | 29% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SW | 29% |
| Monday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 24% |
Forecast source: National Weather Service (api.weather.gov) for Merrimac (37.195, -80.422). Updated through the day.
Growing snapshot for Merrimac
Last spring frost
Apr 24
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
7a
More local growing data for Merrimac: nearby ZIP 24061 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Blacksburg Nwso, Va (1.6 mi from Merrimac). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.